Add the approval line view
Merge remote-tracking branch 'remotes/origin/master' into Develop
Finish the purchase approval by line
1.only the draft,canceled can be deleted
2.only when orders confirmed, then record the quantity changing log
user can change the po line's data when status is in draft/rejected
change the ir_action_server
Add the email fields to ir_actions_server
Finish the ir_act_server sending mail enhancements
Fix the bug of calculating the next running datetime, _process_job() method, change from "now = datetime.now()" to "now = datetime.utcnow()"
Finished the sending mail feature when do purchase order's approval and reject
Added  the po by line's translation
added the content manually maintenance
enhanced the translation and the menu filters
1.Remove the default 'waitting approval' filter to purchase po line screen
2.only the 'rejected' lines can be confirm at the po line page
3.add the 'change_log_po_line' accessing in the ir.model.access.csv
4.add the 'Purchase Order Informer ir_cron
Fix the empty user email issue
Allow to delete 'rejected' order lines
Enhance the purchase product page to add notes and payment term
Make the po order line is readonly when po is confirmed
Add the metro_stock for the material request function
Finished the material request coding